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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2010 The Android Open Source Project | 3 * Copyright 2010 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkJpegUtility_DEFINED | 10 #ifndef SkJpegUtility_DEFINED |
11 #define SkJpegUtility_DEFINED | 11 #define SkJpegUtility_DEFINED |
12 | 12 |
| 13 #include "SkImageDecoder.h" |
13 #include "SkStream.h" | 14 #include "SkStream.h" |
14 | 15 |
15 extern "C" { | 16 extern "C" { |
16 #include "jpeglib.h" | 17 #include "jpeglib.h" |
17 #include "jerror.h" | 18 #include "jerror.h" |
18 } | 19 } |
19 | 20 |
20 #include <setjmp.h> | 21 #include <setjmp.h> |
21 | 22 |
22 /* Our error-handling struct. | 23 /* Our error-handling struct. |
23 * | 24 * |
24 */ | 25 */ |
25 struct skjpeg_error_mgr : jpeg_error_mgr { | 26 struct skjpeg_error_mgr : jpeg_error_mgr { |
26 jmp_buf fJmpBuf; | 27 jmp_buf fJmpBuf; |
27 }; | 28 }; |
28 | 29 |
29 | 30 |
30 void skjpeg_error_exit(j_common_ptr cinfo); | 31 void skjpeg_error_exit(j_common_ptr cinfo); |
31 | 32 |
| 33 /////////////////////////////////////////////////////////////////////////// |
| 34 /* Our source struct for directing jpeg to our stream object. |
| 35 */ |
| 36 struct skjpeg_source_mgr : jpeg_source_mgr { |
| 37 skjpeg_source_mgr(SkStream* stream, SkImageDecoder* decoder); |
| 38 |
| 39 // Unowned. |
| 40 SkStream* fStream; |
| 41 // Unowned pointer to the decoder, used to check if the decoding process |
| 42 // has been cancelled. |
| 43 SkImageDecoder* fDecoder; |
| 44 enum { |
| 45 kBufferSize = 1024 |
| 46 }; |
| 47 char fBuffer[kBufferSize]; |
| 48 }; |
| 49 |
32 ///////////////////////////////////////////////////////////////////////////// | 50 ///////////////////////////////////////////////////////////////////////////// |
33 /* Our destination struct for directing decompressed pixels to our stream | 51 /* Our destination struct for directing decompressed pixels to our stream |
34 * object. | 52 * object. |
35 */ | 53 */ |
36 struct skjpeg_destination_mgr : jpeg_destination_mgr { | 54 struct skjpeg_destination_mgr : jpeg_destination_mgr { |
37 skjpeg_destination_mgr(SkWStream* stream); | 55 skjpeg_destination_mgr(SkWStream* stream); |
38 | 56 |
39 SkWStream* fStream; | 57 SkWStream* fStream; |
40 | 58 |
41 enum { | 59 enum { |
42 kBufferSize = 1024 | 60 kBufferSize = 1024 |
43 }; | 61 }; |
44 uint8_t fBuffer[kBufferSize]; | 62 uint8_t fBuffer[kBufferSize]; |
45 }; | 63 }; |
46 | 64 |
47 #endif | 65 #endif |
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